The **ADP165ACPZN-R7** is a high-performance, low quiescent current, low dropout (LDO) linear regulator manufactured by Analog Devices. It is specifically designed for portable and battery-powered applications where power efficiency and space are critical. --- ### ## 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Input Voltage Range** | 2.2 V to 5.5 V | | **Output Current** | 150 mA | | **Dropout Voltage** | 120 mV (at 150 mA load) | | **Quiescent Current** | 42 μA (at no load) | | **Shutdown Current** | < 1 μA | | **Package Type** | 6-lead LFCSP (2mm x 2mm) | | **Operating Temp** | -40°C to +125°C | --- ### ## 2. Functional Features * **Low Dropout (LDO):** It allows the output voltage to remain regulated even when the input voltage is only slightly higher than the output (only 120mV difference required at full load). * **Stability:** It is stable with small 1 μF ceramic input and output capacitors, making it ideal for miniaturized PCB designs. * **Protection Circuitry:** * **Thermal Overload Protection:** Prevents damage if the internal temperature exceeds limits. * **Short-Circuit Protection:** Limits current flow during a fault. * **Enable Pin:** A logic-level input allows the regulator to be turned off completely to save battery life. --- ### ## 3. Part Number Decoding (ADP165ACPZN-R7) Understanding the suffix helps in identifying the exact variant: | Segment | Meaning | | :--- | :--- | | **ADP165** | Series Base Number | | **A** | Standard Performance Grade | | **CP** | LFCSP (Lead Frame Chip Scale Package) | | **Z** | RoHS Compliant (Lead-Free) | | **N** | Fixed Output Voltage (Check datasheet for specific code) | | **R7** | 7-inch Reel (Tape and Reel packaging) | --- ### ## 4. Application Use-Cases The ADP165 is commonly found in: 1. **Mobile Handsets:** Powering baseband or RF components. 2. **Digital Cameras:** Regulating power for image sensors or processors. 3. **Portable Medical Devices:** Where long battery life is essential. 4. **IoT Sensors:** Devices requiring ultra-low standby power. --- ### ## 5. Typical Application Circuit ```mermaid graph LR Vin[Input Voltage] --> Cin[1uF Cap] Vin --> ADP165[ADP165 LDO] Enable_Signal --> ADP165 ADP165 --> Cout[1uF Cap] ADP165 --> Vout[Regulated Output] GND --- ADP165 ``` ---